Swing/Spring Combo Check Valves (Non-return Valve).
Combines the benefits of a spring and a swing check valve; full-flow design, installs in any position. Quiet and no chatter.15% more flow that comparable spring check valve eliminating the restriction of a spring centre poppet.
Valuable to protect your equipment. In aquaculture air pumps are often below the water line. Use these Valterra check valves to keep water out of the pump with minimum head loss. Ask for specs.
Made in the USA by Valterra.